The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 24, 2007
Filed:
Sep. 13, 2002
Noritaka Nagasaki, Yamaguchi, JP;
Tsuyoshi Kawamura, Yamaguchi, JP;
Kazunori Nukui, Yamaguchi, JP;
Shoji Arai, Yamaguchi, JP;
Noritaka Nagasaki, Yamaguchi, JP;
Tsuyoshi Kawamura, Yamaguchi, JP;
Kazunori Nukui, Yamaguchi, JP;
Shoji Arai, Yamaguchi, JP;
Tosoh F-Tech, Inc., Yamaguchi, JP;
Abstract
A method for producing 2,2,2-trifluoroethanol in which a γ-hydroxybutyric acid salt is reacted with 1,1,1-trifluoro-2-chloroethane to generate 2,2,2-trifluoroethanol is provided. This method leads to increased yields of 2,2,2 -trifluoroethanol, facilitates the separation of salt byproducts and allows the recycling of an aprotic polar solvent. The present invention concerns a method for producing 2,2,2-trifluoroethanol in which a γ-hydroxybutyric acid salt is reacted with 1,1,1-trifluoro-2-chloroethane in an aprotic polar solvent to generate 2,2,2-trifluoroethanol. This method is characterized in that the γ-hydroxybutyric acid salt used contains no more than 6 wt % of 4,4'-oxybis(butyric acid).